Siren Phillips has lived her life thinking she's an ordinary girl, in an ordinary town. On the eve of her twelfth birthday, however, she learns that she is far from ordinary. Destined to turn into a Mermaid at the age of twelve, Siren must struggle with her new reality, saying good-bye to her mother and friends, while she transitions into the water. To make matters worse, a group of hunters are trying to catch her. She soon becomes friends with Adam Wilts, a new boy at school, who she turns to for help. He agrees to help her, but finds himself caught in the middle, when it's his own father who is after Siren. When Siren's mother is taken, the town must rally behind her, and help her make a peaceful transition into the water, before the hunters can find out where she is.继2016年推出两部根据比利时作家乔治·西默农作品改编的梅格雷探长系列电视电影之后，ITV宣布续订两部该系列电视电影，依旧由“憨豆先生”罗温·艾金森主演，斯图尔特·哈考特编剧，第一部为《十字路口之夜》，第二部为《梅格雷在蒙马特》，预计于2017年播出。讲述女儿被绑架的母亲与绑架孩子的家务助理在4天之中发生的故事的惊悚片。严智苑饰演一人培养女儿的母亲，追踪丢失的女儿的下落。孔晓振饰演与孩子一起消失的家务助理，加重影片的紧张感和悬疑。
